diff --git a/core/modules/block_content/block_content.module b/core/modules/block_content/block_content.module
index 3c28ef0..209d766 100644
--- a/core/modules/block_content/block_content.module
+++ b/core/modules/block_content/block_content.module
@@ -83,10 +83,10 @@ function block_content_add_body_field($block_type_id, $label = 'Body') {
       'field_storage' =>  FieldStorageConfig::loadByName('block_content', 'body'),
       'bundle' => $block_type_id,
       'label' => $label,
-      'settings' => array(
+      'settings' => [
         'display_summary' => FALSE,
-        'allowed_formats' => array(),
-      ),
+        'allowed_formats' => [],
+      ],
     ));
     $field->save();
 
diff --git a/core/modules/config_translation/src/Tests/ConfigTranslationListUiTest.php b/core/modules/config_translation/src/Tests/ConfigTranslationListUiTest.php
index dc7e344..1aa9735 100644
--- a/core/modules/config_translation/src/Tests/ConfigTranslationListUiTest.php
+++ b/core/modules/config_translation/src/Tests/ConfigTranslationListUiTest.php
@@ -403,10 +403,10 @@ public function doFieldListTest() {
       'field_storage' => FieldStorageConfig::loadByName('block_content', 'body'),
       'bundle' => $block_content_type->id(),
       'label' => 'Body',
-      'settings' => array(
+      'settings' => [
         'display_summary' => FALSE,
-        'allowed_formats' => array(),
-      ),
+        'allowed_formats' => [],
+      ],
     ));
     $field->save();
 
diff --git a/core/modules/field/src/Tests/Migrate/d6/MigrateFieldInstanceTest.php b/core/modules/field/src/Tests/Migrate/d6/MigrateFieldInstanceTest.php
index 379cea5..7da44ff 100644
--- a/core/modules/field/src/Tests/Migrate/d6/MigrateFieldInstanceTest.php
+++ b/core/modules/field/src/Tests/Migrate/d6/MigrateFieldInstanceTest.php
@@ -78,10 +78,10 @@ public function testFieldInstanceSettings() {
     // Test a text field.
     $field = FieldConfig::load('node.story.field_test');
     $this->assertIdentical('Text Field', $field->label());
-    $expected = array(
-      'allowed_formats' => array(),
+    $expected = [
       'max_length' => 255,
-    );
+      'allowed_formats' => [],
+    ];
     $this->assertIdentical($expected, $field->getSettings());
     $this->assertIdentical('text for default value', $entity->field_test->value);
 
diff --git a/core/modules/node/node.module b/core/modules/node/node.module
index d2128ed..338daed 100644
--- a/core/modules/node/node.module
+++ b/core/modules/node/node.module
@@ -328,10 +328,10 @@ function node_add_body_field(NodeTypeInterface $type, $label = 'Body') {
       'field_storage' => $field_storage,
       'bundle' => $type->id(),
       'label' => $label,
-      'settings' => array(
+      'settings' => [
         'display_summary' => TRUE,
-        'allowed_formats' => array(),
-      ),
+        'allowed_formats' => [],
+      ],
     ));
     $field->save();
 
diff --git a/core/modules/text/src/Plugin/Field/FieldType/TextItemBase.php b/core/modules/text/src/Plugin/Field/FieldType/TextItemBase.php
index bc826d7..e19cc48 100644
--- a/core/modules/text/src/Plugin/Field/FieldType/TextItemBase.php
+++ b/core/modules/text/src/Plugin/Field/FieldType/TextItemBase.php
@@ -24,21 +24,19 @@
    * {@inheritdoc}
    */
   public static function defaultFieldSettings() {
-    return array(
-      'allowed_formats' => array(),
-    ) + parent::defaultFieldSettings();
+    return ['allowed_formats' => []] + parent::defaultFieldSettings();
   }
 
   public function fieldSettingsForm(array $form, FormStateInterface $form_state) {
     $element = parent::fieldSettingsForm($form, $form_state);
     $settings = $this->getSettings();
 
-    $element['allowed_formats'] = array(
+    $element['allowed_formats'] = [
       '#type' => 'checkboxes',
       '#title' => t('Allowed text formats'),
       '#options' => $this->getProperties()['format']->getPossibleOptions(),
       '#default_value' => $settings['allowed_formats'],
-    );
+    ];
 
     return $element;
   }
diff --git a/core/modules/text/src/Tests/TextFieldTest.php b/core/modules/text/src/Tests/TextFieldTest.php
index 8b303da..6b2913f 100644
--- a/core/modules/text/src/Tests/TextFieldTest.php
+++ b/core/modules/text/src/Tests/TextFieldTest.php
@@ -90,19 +90,19 @@ function testTextfieldWidgetsAllowedFormats() {
 
     // Create one text format.
     $this->drupalLogin($this->adminUser);
-    $edit = array(
+    $edit = [
       'format' => Unicode::strtolower($this->randomMachineName()),
       'name' => $this->randomMachineName(),
-    );
+    ];
     $this->drupalPostForm('admin/config/content/formats/add', $edit, t('Save configuration'));
     filter_formats_reset();
     $format1 = entity_load('filter_format', $edit['format']);
 
     // Create a second text format.
-    $edit = array(
+    $edit = [
       'format' => Unicode::strtolower($this->randomMachineName()),
       'name' => $this->randomMachineName(),
-    );
+    ];
     $this->drupalPostForm('admin/config/content/formats/add', $edit, t('Save configuration'));
     filter_formats_reset();
     $format2 = entity_load('filter_format', $edit['format']);
@@ -110,30 +110,30 @@ function testTextfieldWidgetsAllowedFormats() {
     // Grant access to both formats to the user.
     $roles = $this->webUser->getRoles();
     $rid = $roles[0];
-    user_role_grant_permissions($rid, array(
+    user_role_grant_permissions($rid, [
       $format1->getPermissionName(),
       $format2->getPermissionName(),
-    ));
+    ]);
 
     // Create a field with multiple formats allowed.
     $field_name = Unicode::strtolower($this->randomMachineName());
-    $field_storage = entity_create('field_storage_config', array(
+    $field_storage = entity_create('field_storage_config', [
       'field_name' => $field_name,
       'entity_type' => 'entity_test',
       'type' => 'text',
-    ));
+    ]);
     $field_storage->save();
-    $field = entity_create('field_config', array(
+    $field = entity_create('field_config', [
       'field_storage' => $field_storage,
       'bundle' => 'entity_test',
       'label' => $this->randomMachineName() . '_label',
-      'settings' => array('allowed_formats' => array($format1->id(), $format2->id())),
-    ));
+      'settings' => ['allowed_formats' => [$format1->id(), $format2->id()]],
+    ]);
     $field->save();
     entity_get_form_display('entity_test', 'entity_test', 'default')
-      ->setComponent($field_name, array(
+      ->setComponent($field_name, [
         'type' => 'text_textfield',
-      ))
+      ])
       ->save();
     entity_get_display('entity_test', 'entity_test', 'full')
       ->setComponent($field_name)
@@ -146,7 +146,7 @@ function testTextfieldWidgetsAllowedFormats() {
     $this->assertFieldByName("{$field_name}[0][format]", NULL, 'Format selector is displayed');
 
     // Change field to allow only one format.
-    $field->setSetting('allowed_formats', array($format1->id()));
+    $field->setSetting('allowed_formats', [$format1->id()]);
     $field->save();
     // We shouldn't have the 'format' selector since only one format is allowed.
     $this->drupalGet('entity_test/add');
diff --git a/core/modules/views/src/Tests/Entity/ViewEntityDependenciesTest.php b/core/modules/views/src/Tests/Entity/ViewEntityDependenciesTest.php
index a83a1ac..ad8b5cb 100644
--- a/core/modules/views/src/Tests/Entity/ViewEntityDependenciesTest.php
+++ b/core/modules/views/src/Tests/Entity/ViewEntityDependenciesTest.php
@@ -76,10 +76,10 @@ protected function setUp() {
       'field_storage' => FieldStorageConfig::loadByName('node', 'body'),
       'bundle' => $content_type->id(),
       'label' => $this->randomMachineName() . '_body',
-      'settings' => array(
+      'settings' => [
         'display_summary' => TRUE,
-        'allowed_formats' => array(),
-      ),
+        'allowed_formats' => [],
+      ],
     ))->save();
 
     ViewTestData::createTestViews(get_class($this), array('views_test_config'));